When comparing Platinum Preppy vs TWSBI ECO, the Slant community recommends TWSBI ECO for most people. In the question“What are the best fountain pens for beginners under $50?” TWSBI ECO is ranked 1st while Platinum Preppy is ranked 4th. The most important reason people chose TWSBI ECO is:
You can put a huge amount of ink in this pen and write for hours. It is also pretty nifty.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Very cheap
The fountain pen is dirt cheap.
Pro Trusted manufacturer
Platinum produces some of the highest quality fountain pen, and Preppy is their answer to people asking for a fountain pen without extra care to handle.
Pro Piston filler
You can put a huge amount of ink in this pen and write for hours. It is also pretty nifty.
Pro Demonstrator
Beautiful clear bodied pens that you can see the ink flowing around in.
Pro Dissassembly
You can take this pen apart and maintain it. It shouldn't need this basically ever, but it's good just in case.
Cons
Con Nib is not the best
Especially the EF nib, not smooth on daily A4 paper.
Con It is more difficult to clean
Con Piston filler
This filling mechanism isn't as easy to use as a cartridge/converter pen.